Quick-detachable plowshare



L. H. KAUPKE.

QUICK DETACHABLE PLOWSHARE. APPLICATION FILED APR. 4, 1919.

1,356,723. Patented 0t.26,1920.

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QUICK DETACHABLE PLOWSHARE.

APPLICATION FILED APR. 4. I9I9.

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AWE/wok 1" @M246 ATTORNEY L. H. KAUPKE. QUICK 4DETACIIAB-LE PLOWSHARE.

APPLICATION FILED APR.4, |919.

Patented oct. 26,1920.

4 SHEETS-SHEET 3.

L. H. KAUPKE. 4

QUICK DETACHABLE PLOWSHARE.

APPLIcArloNvHLEn APRA. 1919.

1,356,723. Patented Oct. 26, 1920.,

4 SHEETS-SHEET 4.

WITNESS/5S;

Y "By I l I ATTURNY' LEE H. KAUPKE, OE ROOK ISLAND, ILLINOIS, AssiGNOR 'ro ROCKISLAND LOW COMPANY, OE noci; ISLAND, ILLINOIS, A CORPORATION OE ILLINOIS.A

QUICK-DETACIIABLE PLOwsHAitE.

Y Patented Oct.Y 26, -1920.

Application filed April 4, 1919. ASerial No. 287,607.

Toall w hom it may concern.' Be it known that I, LEE I-I. KAUPKE, a citizen Vof the United States of America, and resident of Rock Island, Rock Island county, Illinois, have invented a certain new and useful Improvement in Quick-Detachable Plowsh'ares, of which the following is a specification.

My invention relates to an improvement in quick detachable plow shares-that is, to

improved means for readily connecting and' disconnecting the plow share to and from, the frog and mold-board. In operating in certain soils, the edge of the plow-share ,be-

vcomes dulled'very quickly, thus necessitating the frequent changing of these shares. It is, therefore, advantageous to provide means whereby the share can be quickly and easily vattached and detached from the mold-board instead of being secured thereto by the usual bolts Or rivets. Y This is particularly true in connection with engine vplows, in which it is diiiicult to tip the plow so as to gain ready accessto theVV bottom ofthe plow, for the purpose of removing such boltsor rivets.

By my invention, I provide means by which the plow-share is firmly and securely held in position and can be detached from the mold-board without removing any bolts or' rivets.

Among' the special objects of my'invention are to provide leflicient means for loosening the plow-share, so that it can be easily removed.V In attaching the plow- Share to the mold-board, a wedging action is employed to firmly force thel samekinto proper position, and in removing the share this wedging action is first released and then Y the share moved bodily so as to loosen the Same, whereby it may be easily removed. Furthermore, by my invention I provideV a; suitable quick detachable means for the share without unduly weakening the frog.

These and'other features and objects of my invention willv be more readily under'- p stood by having reference vtothe accompanying drawings, in which I have illustrated the preferred'embodiment of my invention.' f

Figure 1 is a perspective view of a plow embodying my invention, the plow being.

shown as resting upon theland-side.-

Fig. 2 is a view looking directly at the edge of the plow-share,` as shown in Fig. 1, a portion ofthis plow-share andof the frog Aram* OFFICE.

Fig. 5 isa sectional viewtaken on the i line 5 5 of Fig. 2.

Fig. 6 is a sectional view taken onpthe` Fig. 7 is a perspective view of the'plowshare. l Y

As illustrated, my improved plow comprises the usual mold-board I1'0 and land-'fV side 11, v secured together by the frog" 12,. the usual Strengthening braces 13, 14;,being provided between the mold-board and the frog `and land-side, respectively. The'plo'wfshare -15 is ofthe usual Shape, but instead ofV be'- ing bolted or-rivetedto, the frog, I .provide suitable quick detachable meanswhich will now be described., '1

Mounted on the vback of the mold-board,

there is a hand-lever 16 which at its forward end is bifurcatedso as to form a yoke-shaped member, Vthe arms 17 of'this yoke being pivoted on a pair of ears 18 attached to the back of the 'mold-board.' Pivotally mounted jin this yoke is a transverse bearing member 19, 1

through which a rod. 20 extends, which rod is threaded at its'ends and rheld inrposition by a pair of lock nuts 21, whereby the rod may be suitably yadjusted longitudinally in this, bearing member. vThe opposite end ofL this rod is pivotallysecured to a plate- 22,

which plate is provided with a longitudinal f guiding slot 23 which engages with a bolt 24, carried by the fi'og12.` This guiding slot in-f sures a straight line reciprocating movement 'for the rod 20, when the same is op.-;

erated through the medium of the hand-le-V verl. The plate 22 vis likewise *providedv with an opening 25;, the ends being rounded and one end being largerthan theiother, as

clearly shown in Fig. 3. V,This opening 25v V in this .plate is adapted to register with a somewhat similar` shapedfopening-26, al'- though reversed in position, inthe frogV 12.

Secured tothe plow-share 15,y thereis a bolt;V

27 which Vcarries a sleeve 28, which sleeve is provided with an enlarged head or ange 28a.. This sleeve is held in position on thev bolt 27'.- by means of the nut 29. The opening 26 Ain the frog is of suicient size at its "operated by the hand-lever, in the manner to be hereinafter described, it operates to draw downward on the bolt v27, This action is-assisted by having thesurface of the plate 22 which engages with the head 28il likewise inclined, that is, the plate is thicker at its outer edge than immediately adjacent the opening 25. The opening 25 is'so shaped that the end of the plate 22 engages the head or flange 28a at diametricallyoppositepoints, so that this wedging action produces a pull on opposite sides of the bolt, 27, and thus prevents'any bending or shearing action on this bolt. The surface of the liangev 28a which engagesv with the frog 12 is likewise inclined so as to produce a further wedging action as the plate is drawn into llocking po* sition.

Secured to the plow-share, there is an olfset fastening member 30, which is adapted to engage with an extension 31 on the brace 14. The forward end of the frog is cut away, as clearly shown in Figs. 1 and 2, and the. share is provided with ay pin 32 adapted to engage with this cut-away portion. The edge 33 of this cut-away portion is slightly inclined, so that as the share is drawn into position and the pin rides on this inclined surface,pthere is a wedging action which tends to firmly force the share into engagement with'the frog and mold- Y board.

The method of attaching and detaching this `share is as follows :.-The point of the sharev is first slipped over the endr of the frog, so that the pin 32 Yengages with the inclined surface 33 at the same time the bolt 27V is passed through the enlarged portion of the opening 26 and the hand-lever 16 is thrown into the dotted line position shown in Fig. 2, so'that this bolt 27 and head 28l likewise pass through the enlarged portion of the opening 25 in the plate 22. At'this time the offset member 30 is in posit-ion to engage the member ,31, the parts all beingY shown in the dotted line position of Fig. 2. The yhand-lever is then thrown to the left, as shown in Fig. 2, and thus draws the rod 20 and plate 22 to the left,ppulling upon Vthe bolt 27 attached to the plow-share. This draws the plow-share from the dotted line position, Fig. 2, into the full line position, Land during this movement the pin 32 slides on the inclined suredge of the member 30 likewise engages with the member 31. This oifset edge of the member 31 is likewise slightly inclined so as to create a wedging action. Thus we see that at three points this movement of the hand-lever creates a wedging action on the plow-share, so as to firmly and securely clamp the same in position against the mold-board. By swinging the lever over center*that is, to such a position that the rod 2O passes upon the other side of the pivotal point of the lever 1li-the parts are irmly'locked in this position. Inv order to quickly detach the share from' ther moldboard, it is merely necessary to swing the hand-lever back to the dotted line pof sition, during which movement the plate V22 moves so as to disengage itself fromthe head. 28, thus relieving the wedging action between this plate and the head of the bolt,

and then as the rod 2O is moved still farther to the right, `the left-hand end of the opening 2 5'of this plate strikes the bolt 27 so as to give the share a sudden 'kickto thereby bodily move the same and thus loosen the engagement between the offset member 30 on the share andthe member 31 carried by the frog, as well as lto loosenthe engagement between the pin 31 at theipoint of the share and the inclined edge 33 of the frog. Thus the movement of the hand-lever in Areleasing the share not only releases all the means which were locking or holding the share in position against the moldboard, but it likewise gives the share a sudden kick to loosen the plow-share from the mold-board, rso that it can be read-ily removed. It will likewise be seen that by my construction I have provided a plow-share which is readily detachable and yet firmly held in position' at three independent points; and, furthermore, the frog has not been unduly weakened by numerous holes and slots, as but a single hole has been made in this frog.

While I have illustrated and described one specific embodiment of my invention, it will be understood that various changes and modifications may he made without departing fromr the spirit and intent of my invention.

What .I claim as my invention is:

1. In a plow, a mold-board, a frog secured thereto, a removable share adapted to be seated against said frog, means'. for bodily movingsaid Share to lo'ck thel SMD@ in position against said frog, said means upon release unlocking said share and bodily moving the saineto thereby render the same Jfreely removable from said frog.,

2. In a plow, a mold-board, a frog secured thereto, a removable share adapted to be seated against said frog, an opening inv said frog,a bolt secured to said frog and passing through said opening, and means Y' located von the under side oi-said Jfrog for engaging said bolt to move the share bodily and to lock the same .in position against lsaid frog, said means operating on release Vcured thereto, a removable plow share adapted to be seated against said'frog, an opening in said frog, a bolt secured to said share and provided with an' enlarged head passing through said opening, a lockingV plate on the under side of said frog and adapted to engage the said head, hand-operated means or reciprocating said plate, the movement of saidplate in one direction op-` erating to move said share bodily and lock the same in position against said rog, the movement of the plate in the opposite direction operating to release said locking means vand move said sha-re bodily in the opposite direction, whereby the same maybe readily removed from said frog. Y

Il. In a plow, amold-board, a frog secured thereto. a removable plow share adapted to be held in position against said frog at three independent points, and handoperated means for locking said share in position against said frog, said hand-operated means operating upon release to release said locking means and to bodily move said share, whereby the same may be easily removed from said frog.

5. In a plow, a mold-board, a frog' secured i thereto, a share adapted to be seated against said irog, an opening in said frog, a bolt provided with an enlarged head secured to said share and adapted to pass through said opening, a looking member on the lower side oi' said frog adapted to engage said enlarged head, and means for moving said locking member transversely, the engaging races oi" said head and locking member being inclined or beveled and diametrically oppositepoints on said head engaging said lockniember whereby the transverse movemeat ot said locking Vmember Aoperates to move said bolt and share downward and transversely to thereby lock said share in position against said share, without producing any bending stress on said bolt.

6. In a plow, a mold-board, a frog secured thereto, a removable share adapted to be seated against said frog, an opening in said frog, a bolt provided with an enlarged head secured to said share and passing'through said opening, a plate provided with aneloii- Y secured to said rod so as to reciprocate said gated peeing mounted on nl@ tak of an frog and engaging'with said head, a reciprocating rod for drawing said platel in one vdirection to bodily move said share and lock frog, a bolt provided with an enlargedhead passing through said opening, a plate 80 mounted on the back of said frog and providedl with an elongated opening, one end of said opening being of suiiicient size to permit said head to pass freely through the same, the other end of said `opening being smaller' than said head, a rod secured-to said plate, and a hand-lever pivoted to said mold-board and secured to saidrod so as to move Vsaid rod to thereby draw said plate intoA position, whereby the smaller end of said opening engages between said head and the frog toV thereby lock said share into position against said frog, therengaging faces between said head and plate being inclined, whereby a wedging action is produced when said plate is* moved into locking position to Vthereby draw said share'irmly against said frog.

8.. In a plow, a mold-board, a frog secured thereto, a removable share adapted yto be i seated against said frog, an opening in said frog, a bolt providedwith an enlarged head passing through said opening, a plate mounted on the back of said frog and pro- 1 videdv with an elongated opening, one end of said opening being of sufficient size to permit said head to pass freely through the same, the other end of said opening being smaller than said head, a rod secured to said plate, a

hand-lever pivoted to said mold-board and rod tothereby draw said plate into position, whereby the smaller end of said opening engages between said head and the frogto thereby lock said share into position against said frog, the engaging faces between said 115 head Vand plate being inclined whereby a wedging action is produced when said plate is moved into locking position to thereby .-draw said sharefiirmly against said frog, v

said opening being so shaped that the plate engages said head at diametrically opposite points, thereby eliminating anybending or y shearing stressl on said bolt when the same is drawn into locking position.

" 9. In' arplow, a mold-board, a frogV secured 125 thereto, a removable share adapted to be lseated against said frog, adjustable vhandoperated means for bodily moving said share to` lock the same in position against said frog, said hand-operated means upon release Y unlocking Said sliaie and bodily moving the same to thereby render the same freely removable from said frog.

10. In a plow, a .mold-board, a frog `'Se- Cuifed thereto, a iemovable plow share adapted to be seated against said frog, an opening` in said l'fiog, a bolt lsecured to said share and provided with an enlanged .head passing ythrough Said opening, a looking plate on the under side of said frog and adapted to engage lthe said head, hand-operated means adjnstably connected to said plate for Langes reciprocating saine, :the movement of said plate in one direction operating to move said share bodily and look t'he same in posit-ion against said rfrog, the movement off the plate in the opposite direction Vope-rating to release said' locking :means and move said share bodily in the -opposite direction, whereby/the same-may be readily removed from said frog. 1Signed me aft Rook Island, Ill., this 152th AClay of March, 1919.

LEE KAUPKE. 

